I'm trying to use an ASP.NET RangeValidator
to validate a date on a textbox. The format of the date entered on the textbox is dd MMMM yyyy
.
How can I use the range validator to validate a valid date? If I enter 1 January 1000 as the min or max value I get an error saying value cannot be converted to type date, but if I use another format it picks up my entered text as invalid.
Below is my code:
<asp:TextBox
runat="server"
ID="txtDatecompleted"
/>
<cc2:CalendarExtender
ID="datecompletedExtender"
runat="server"
TargetControlID="txtDatecompleted"
Format="dd MMMM yyyy"
/>
<asp:RangeValidator
runat="server"
ID="RangeValidator1"
Type="Date"
ControlToValidate="txtDatecompleted"
MaximumValue="9999/12/28"
MinimumValue="1000/12/28"
ErrorMessage="enter valid date"
Display="None"
/>
<cc2:ValidatorCalloutExtender
ID="RangeValidator1_ValidatorCalloutExtender"
runat="server"
Enabled="True"
TargetControlID="RangeValidator1">
</cc2:ValidatorCalloutExtender>
Best option would be
Add a compare validator to the web form. Set its controlToValidate. Set its Type property to Date. Set its operator property to DataTypeCheck eg:
<asp:CompareValidator
id="dateValidator" runat="server"
Type="Date"
Operator="DataTypeCheck"
ControlToValidate="txtDatecompleted"
ErrorMessage="Please enter a valid date.">
</asp:CompareValidator>